Fluid-pressure system and automatic governor therefor.



F. S. VAUGHN. Y FLUID PRESSURE SYSTEM AND AUTOMATIC GOVERNOR THEREFOR.'.APPLIOATION Plum JAN.10, 1907.

4 1,050,376, patented Jan.21,1913,

2 SHEETS-SHEET 1.

P. s. VAUGHN. FLUID PRESSURE SYSTEM AND AUTOMATIC GOVERNOR THEREFOR.

APPLIGILTIGN FILED JAN.10, 1907. 1,050,876.

Patented Jan. 21, 1913.

2 SHEETS-SHEET 2.

@fn/65565.' @WM T .Erw/J .7/ f2 UNITED fsflA'iEs PATENT OFFICE.

f um s. VAUGHN, or cnIc'Aoo, ILLINOIS, AsssNonoF cnn-HALF To J.novnnown, F QUINCY, ILLINOIS. f

` marin-runssunn SYSTEM AND AUTOMATIC eovnanon Timmeren.V

t rocosas.

' To alt whom, it may concern: l

4Beit known that I, Fimo S.' VAUGHN,

' la-ctiunen of thel United States, residing at Chicago,.in the. countylof Cook and State 5.; of Illinois, havejnvented a new and useful vImprovement in Fluid-Pressure' Systems and Automaticr-GoveI-norsTherefor, of

' which the following a complete specication; 1 v f lo This-inventionVrelates to fluid pressure f systems v'and automatic governors thereforand morelparticularly toa pumping or air compremiuglsystem provided withan automatic governor especially adapted to regujlflate,within-predetermined limits, the presysure."in the system. Heretofore insuch pumpinggor compressing s stems in order to keep the. ,amount oftheuid stored, and consequently Tthe, pressure, within desired limits, ithas usually been necessary to provide a. constant attelidantI for theengine or other prima mover, even though the pump or adapted to beautomatically cut inandout when the pressure 'reaches This of coursegreatly increases the 'cost ,of operation, not only be` 'cause'oi thelabor required, but also because of the. operation of the engine whenpulpis out of service. 'Furthermore itzhasnot possibleewhen using aninternall combustion engine as the prime. r mover in the system, toautomatically.; stop the a. predetermined maximum pressrehas reached inthev system and to a'ntomntcally; startl the same when the has againfallen below normal. 4'The object of this invention 1s to provide a.'pressure system havinga governor adapty ed'to autmlrmticjallyl .cut outthe engine or othenprimeqmover when Va predetermined 4maximum pressureis reached in the system and to automatically start' the same when the.pressure has again `fallen below normal, thereby insuring regularoperatlon and `citiciency, ofthe system without theconstanty has beencut out of the service `by the Specification of Letters Patent.

Application January 10, 1907. Serial No. 851,712.

.if stopped when the maximumpressure is care ofpan attendant and withoutthe con' Patented Jan. l21, 1913.

1ncrease of pressure, and is dead, will be automatically operatedcausing a reverse flow.` of the fluid from the storage tank to thecompressor or pump which acts to start the engine vand thereby obviatingthe'necessity of either l continuously running the engine or requiringthe constant' employment of an attendant to manually startthe samereache n The invention consists of the `matters hereinafter describedand more fully pointe ed out and defined in the appended claims.

In the drawingsr`Figure 1' is a 'fra-gruentary .top plan view of acompressing system provided with overnor embodying my Invention. Fig? 1san enlarged side elevation vof the governor 'and showing its c linv derin section. Fig. 3 is an enlarged,l gment-ary, horizontal section ofthe' Governor. 75 Fig. 4 is an end elevation of the driving" endthereof. Fig. .5 is a fragmentary view of the governor shaft, showingthe movable collar in horizontal section and, in dotted lines, theposition which said shaft assumes at maximum pressure. Fig. 6 is anenlarged, horizontal' section of the reversing valve.

As shown in said drawings: tipe pressure system may be of any `desiredkind but for the purpose of more clearly illustrating its operation itis shownasan air compressing system which is provided with anfautomaticgovernor embodying my invention and indicated as a whole by A. Said aircompressing system may comprise any suitable kind vor construction ofpump but as shown it is composed of a rotary compressor or pump' B whichis connected directly with. the sha-ft o of the `internal combustionengine C of any desired construction. A pipe c" opens from theatmosphere into a .four way valve B of any desired construction, and apipe czleads from said valveto the intake end of said compressor. A pipec3 leads from the outlet en'd of said compressor to said valve and .100

-the 'inst allation.

'p Referring now more' particularly to the construction of *thegovernor, A Indicates the base which may a casting or any other desiredconstruction and adapted to be rigidly engaged to a solid foundation.Rigidly engaged on said base, near one end thereof, is a bearingstandard a, having a bearing sleeve a at its outer end in which isrotatively engaged the tubular shaft a2 which projects from both ends ofsaid sleeve. On 'i the. opposite end of said base and rigidly en-` gagedthereto is a pressure cylinder E which is in axial alinenient withthesleeve 1t/'and is provided in its end farthest from said sleeve witha head e, through which opens the pipe e leading `from the storage tankD. Said cylinder E may be of any desired diameter, dependent upon thepressure to be lmaintainedin thesystem and may be provided with anymovable member against which the pressure acts, but as shown, it isprovided with a close fitting piston E', to which is rigidly engaged oneend of the piston rod e2, the other end of which is slidably engaged inthe tubular shaft a2. Said tubular shaft may be driven by the engine inany preferred manner butas shown, it'is provided on its outer end with abelt pulley a?, in'alinement with a similar' pulley on the Yengineshaft, and a belt a4 is carried on said pulleys andcauses said shaft ltorotate with said engine shaft.

Rigidly en"gagedon the inner-.end of the Shaft a2 is a collar a5, andrigidly engaged on the piston rod e2 a short distance therefrom is astop collar as against which, on the opposite side thereofy from thecollar a5, abuts the slidable sleeve aT which, as shown, is provided' inits end adjacent the collar a5 with a chamber adapted to receive thecollar a and which projects over the collar a,

considerable distance toward the collar a as shown more clearly in Figs.3 and 5. lVeights or balls L9 are flexibly connected with the collar a5and the sleeve al by means 'of links L10 which are pivotally connectedtherewith and with suitable lugs a on said collar and sleeve.Centrifugal force acts to throw said balls outwardly from the rod e2when the shaft a2 is rotatedand since the collar a5 is stationary on theshaft. a2 the rod e'2 is moved by said weights through the shaft a?until the sleeve a7 contacts with the collar a5, thereby drawing thepiston outwardly in the cylinder to the position shown in dotted linesin Fig. 2.

` A connecting rod F is provided at one end with a yoke f which engagesin a groove as in the sleeve a? and at t-he other end is connected withthe lever b of the four way pressor with the tank and when at the oppolsite limit, as shown in full lines inv said l figures, is in reverseposition and permits a flow of fluid from the tank to the intake l endof said compressor. A switch lever G is pivotally supported intermediateits ends i' upon a standard g or in any other preferred manner. and oneend thereof projects through a suitable slot in the rod cf causing it tobe moved by said rod. The opposite end of said lever is provided with ametallic point g. which is adapted to engage the switch blade or plate(/2 which is lare shaped and controls the sparking device of the engine,not shown. A spring g3 is connected at one end to the lever Gintermediate its pivotal point and the contact end thereof and at itsopposite end to the sleeve a or any other immovable part and is ofsutlicient strengthto normally hold thepiston rod and the slidablecollar retracted as shown in full lines in Fig. l. The contact point gand blade g2 are connected with said sparking device and with theelectric battery therefor. not shown, by .wires g and g5 re-`spectively.

The operation is as follows: llrlien there is no pressure in the tank Dand the engine is at rest, the spring g3 acts to hold the piston rod e2retracted or at the limit of its movement toward the pressure cylinder.in which position the switch lever G is in electrical contact with theswitch blade or plate on the engine and the connecting rod F is holdingthe controlling valve in reverse position as shown in full lines in Fig.l. The engine may be started in the ordinary manner and it' immediatelyrotates4v the tubular shaft a2 at a rapid rate, causing theballs a9 torotate therewith. The centrifugal force caused by the rapid rotation ofsaid ba'llsactszto throw them outwardly and thereby moveethel rod e2longitudinally against the tension of the 'spring g3 until said ballsreach their'outer limit of movement. This movementof the rode2 throwsthe reversing "alve to the position shown in dotted lines in Fig. 1, inwhich position the fluid flows from the pump to the tank D, and at thesame vtime throws the lever G to the end of the blade or plate g2 asshown in dotted lines fc in Fig. l. The tension of the spring g3 is suchthat it will not permit the lever to move ott the blade or plate g2unt-il the pressure in the tank D has nearly reached itsv maximum. Thenhowever the pressure acting on the piston E has -becomevhigh enough toovercome the tension of the spring. the rod e2 collar a5 abuts againstthe end of the tubular shaft L2 at which time the lever G has been movedout of contact with the plate g2, as

breaking the circuit in the wiring system of the engine and .causingitto stop. As the pressure 1s reduced in the tank through the is movedstill farther to the position shown in dotted lines in Fig. 5, that isuntil the V shown in dotted lines at y in Fig. l, thereby f outlet piped, which may lead to any device utilizing the fluid, the spring g3causes a reverse movement of the rodI e2, thereby moving the contactlever back onto the plate 'g2 and turning the controlling valve to reverse position, .thus ermitting the duid to How from the tank t roughpipes c4 and o2 to the compressor causing it to rotate and start theengine which at once picks up its speed and .repeats the operation.

While I have shown the ,governor as connected in an air compressingsystem it is obvious that'it may be used for many other purposes andthat the arrangement Aof the diderent parts in the system will depend ineach installation upon the necessities of the case.

s agemeans adapted to deliver pressure to pressure in said storagemeans.

said cylinder' and cause further movement of said piston and rod, andmeans operated from said rod and adapted to control the 2. In a deviceof the class described the combination with a cylinder, of a pistontherein, a centrifugal governor connected with said piston, and adaptedto move the piston in one direction, a pressure reservoir' adapted toadmit pressure to the cylinder, and move the piston beyond the limit ofmovement of the governor, means operated by the piston-and adapted tocontrol the pressure in the reserv'ioir, and means adapt ed to, returnthe piston to normal position when the pressure in the reservoir falls.

3; In a device of the class described the combination with a; cylinderof a movable member therein, mechanically operated means adapted to movesaid member longitudinally of the cylinder, a pressure reservoir, meansadapted to supply pressure thereto, means adapted to admit pressure fromsaid reservoir into said cylinderand cause further movement of saidmember, a controlling valve for said reservoir and means thereonconnected with said member adapted to operate the valve and control thevpressure supply means.

4. In a device of the class described the combination with areservoir'ofmeans for storing Huid therein under pressure, a motoradapted to operate said means, a valve adapted to cont-rol the fluid insaid reservoir, vpressure operated meansi'adapt'ed to stop said motorrwhen a predetermined pressurey is reached in said reservoir, meansadapted t-o reverse the valve when the pres-` sure falls and start themotor and automatic means adapted to restore said valve to nor-4 malposition.

5.1m device of the'class described the i combination With arotati'vetubular shaft of a piston rod slidably engaged tliert'ixi,

centrfugally operating means connecting said rod and shaft and adaptedto more one through the other, a cylinder and a piston therein rigidlyconnected with the and of.

said rod.

6. In a device of the class describedv the' combination With anlinternal combustion a rod slidably engaged in said tubular shaft,

means for moving said rod longitudinally through said tubular shaft,means on said rod adapted to stop the engine and means actingautomatically to start the same.

7 In a device of the class "de'scribed the combination with `a pressurecylinder of meansl for supplying pressure thereto, a piston in saidcylinder,A a rotary tubular shaft, a piston rod rigidly piston andextending through said tubular shaft, centrifugally operated meansconnecting said rod and shaft and adapted when the tubular shaft isrotated to move the rod ylongitudinally thereof and reversing'y valveoperatively connected with said r'od.

8. In a device of the class'idescribed the ged on said,

engine of a tubular shaft rotated thereby,

combination with an engine of a pump driven thereby, a storage tank, apipe con-A necting said pump with said tank, a four Way valve therein,-a cylmder in open-com shaft adapted to be rotated by said engine,centrifugally operated means connecting said rod and shaft and adaptedtomove the piston rod longitudinally, a rod connecting ,the same and saidvalve and a switch 0pmunication With said tank, a piston therein, Vapiston rod connected with said piston, a

said piston rod, means for supplying fluid pressure to said cylinder, afour Way valve therein, means connecting said piston rod with saidvalve, centrifugally operated means adapted when said tubular shaft isrotated to hold the valve in one position, and a switch operated by themovement of said piston rod.

, 10. In a combination With a tank of means for supplying fluid thereto,an internal combustion engine adapted to operate .said means and agovernor engine adapted to automatically stop said engine at a'predetermined pressure and to create a iidvy from the tank to saidmeans and start the engine when the pressure has fallen below normal.

1ll In e. device of the class described the iis,

combination with a {Jiuid pumping and storing device, of an mtern'alcombustionV engine adapted to operate the same, a shaft adapted to berotated. by said engine, a longitudinally movable rod, a cylinder inopen communication with said pumping and storing device, means thereinadapted to opcrate said rod, a valve in said pumping and device, meansactuated by the movement of said rod adapted to operate said valve andmeans operated by said rod adapted to cut the engine into and out ofService dependent upon the position of said valve. 12. In a device ofthe class described the combination with an engine of a pump operativelyconnected therewith, a storage tank in communication with said pump andautomatic means operated by the pressure Vin said tank and adapted vtooperate the pump and start the engine.

' 13. In a device of the class described the fao lcombination with anengme of a pump connected therewith and `adapted to be driven therebyand means adapted to store up' pressure and' automatically operate thepumpV combination With an` engine of a pump driven thereby, a storagetank in communication with said pump, and automatic means and to operatethe pump and start the engine when the pressure falls.

I6. In a device of the class described the combinationV with an engineof' a .pump driven thereby, a storage tank connected with said pump andpressure operated means adapting said pump to automatically start theengine.

17. In a device of the class described the combination with an engine ofa pump adapted to be driven thereby, a storage tank, a pipe. connectingthe pump with said tank, a reversing valve in said pipe and pressureoperated means connected with .said valve and adapted to operate thepump and start the engine. v

18. In a device of the class described the combination with an engine ofa pump operatively connected therewith, a, storage tank, a pipeconnecting said pump with said tank, la controlling valve therein, a.

cylinder, a movable member therein, means adapted to admit pressure fromthe tank into said cylinder, means acting against the pressure in saidcylinder and adapted to reverse said valve and cause a flow from. the

ltank to the pump when the pressure falls below normal and means forautomatically restoring said valve.

In testimony whereof I have hereunto subscribed my name in the presenceof two witnesses.

FRED S. VAUGHN.

' Witnesses W. W. WITHENBURY, Marne. WITESNBURY.

